const createError = require('http-errors');
const express = require('express');
const path = require('path');
const cookieParser = require('cookie-parser');
const logger = require('morgan');
const cors = require('cors');
const indexRouter = require('./routes/index');
const usersRouter = require('./routes/users');
const roleRouter = require('./routes/role')
const menuRouter = require('./routes/menu')
const departmentRouter = require('./routes/department')
const questionnaireRouter = require('./routes/questionnaire')
const {verify} = require("jsonwebtoken");
const app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({extended: false}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

// 中间件：全局添加认证 token 的功能
function authenticateToken(req, res, next) {
    // 如果是登录请求，则跳过中间件，让请求继续向下执行
    if (req.path === '/api/login' && req.method === 'POST') {
        return next();
    }

    const authHeader = req.headers['authorization'];
    const token = authHeader && authHeader.split(' ')[1];
    if (token == null) {
        return res.sendStatus(401);
    }

    verify(token, 'mysecret', (err, user) => {
        if (err) {
            return res.sendStatus(403);
        }
        req.user = user;
        next();
    });
}

app.use(authenticateToken);

app.use('/', indexRouter);//最终
app.use('/api', require('./routes/users'));
app.use('/api', roleRouter);
app.use('/api', menuRouter)
app.use('/api', departmentRouter)
app.use('/api', questionnaireRouter)
app.use('/api', require('./routes/news'))
// catch 404 and forward to error handler
app.use(function (req, res, next) {
    console.log(req)
    next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get('env') === 'development' ? err : {};

    // render the error page
    res.status(err.status || 500);
    res.render('error');
});

module.exports = app;
